Genuine Refurbished QSC KSUB Amplifier Bucket. Excellent Condition
For extra low-frequency extension and enhancement, the dual 12 inch powered KSub is perfectly matched to the rest of the K Series. The K8, K10 and K12 all have a selectable high-pass filter for use with the subwoofer. The KSub includes a fixed low-pass filter so it will accept full-range input.